1. For every cup of sugar, mix in 1 teaspoon of merengue powder and sprinkle 1 teaspoon of water on top.

2. Work the mixture together with your fingers until it feels like "cool beach sand".

3. Fill the molds (for the front and the back) with sugar and flatten the backs by scraping off the excess sugar.

4. Let them dry for a few hours until the top is hard enough to the touch.

5. Scoop out 2 spoonfulls of the center of the round parts of each mold, so they dry thoroughly for a few hours. Flip the molds and cardboard upside down so the sugar skulls drop safely onto the piece of cardboard or thick paper.

6. Let them dry for a few hours until the top is hard enough to the touch.

7. For the royal icing, you'll need powdered sugar, merengue powder, and water. Why icing? to "cement" the two halves together and to decorate!